Improvement in carriage-wrenches



J'. T. GILBER'I.

CARRIAGE-WRENCH. NQ.184,7o7. Patented Nov.'28',1876.

wnnzssas IYINVENTOR N. PETERS. PNOTOZLITHOGRAF'HER, WASHINGTON D C UNITED STATES PATENT QF IOE;

JOHN T. GILBERT, OF JACKSONVILLE, ILLINO1s;

IMPROVEMENT IN CARRlAGE-WRENCHES.

Specification forming part of Letters Patent No. 184,707, dated November 28, 1876; application filed September 30, 187 6.

,To all whom it may concern: Y

Be it known that I, JOHN T. GILBERT, of Jacksonville, in the county of Morgan and State of Illinois, have invented a new and Improved Carriage-Wrench; and I do hereby declare that the following is a full and exact description Of the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

The invention herein described is an improvement in carriage-wrenches of that class adapted -to engage with the spokes ot' the wheel in such manner that by turning the latter the nut on the end of axle may be turned on or off; and consists in certain details of construction, hereinafter described, whereby the wrench may bereadily adapted to fit any sized nut by a contrivance believed to be more simple and substantial than any heretofore devised for the same purpose.

In the drawing, Figure 1 represents a side elevation of the wrench, a part of the hub of the wheel being shown in dotted Iines'. Fig. 2 is aplan view of the same.

A, Fig. 1, represents a plate, provided at each end with any arm, 1), adapted to project between the spokes ot' the wheel, and covered with rubbers p p, to prevent abrasion of the latter. 0 c are two jaws designed to embrace the nut, 0 being movable in a slot, at, and secured -in position by a thumb-nut,f.

The wrench is operated by placing the arms I) 1) between the spokes of the wheel, and the twojaws within the end of the hub,.tl1ejaw 0 being moved along the slot d, and secured in position by the thunib-nutf, so as tojust span the nut, which is then actuated by a twirl of the wheel in the proper direction.

It will be observed by reference to the drawing, 'Fig. 1, that the part of the plate A which includes the slotd is thicker towardthe end S. The object of this is to prevent the possibility of the movable jaw slipping backward from the position in which it is secured.

' What [claim as my' invention, and desire to secure by Letters Patent, is-

In combination with the arms bb,-the taper plate A, provided with a fixed jaw, c, longitudinal slot d, and adjustable jaw c, the plate A having its inner and outer faces made divergent from each other from the fixed jaw c to the point S, so as to act as-a wedge between the base of the sliding jaw c and the nut by which it is secured in position, the combination of these parts and their adaptation to l each other being as and for the purpose herein set forth.

This specification signed and witnessed this 21st day of September, 1876.

JOHN T. GILBERT. 

